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NEET UG Structure of Atom — practice questions — page 4

Explore 125 free Structure of Atom questions in NEET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Structure of Atom questions and exercises with answers

Showing questions 91–120 of 125.

Mark the sub-atomic boardRead the answer and worked solution →Match the finder to the findingRead the answer and worked solution →Fill the subshells in orderRead the answer and worked solution →Catch what Bohr could not explainRead the answer and worked solution →Complete the n = 3 shellRead the answer and worked solution →The charge carried by an electron is about:Read the answer and worked solution →The proton was characterised in the year:Read the answer and worked solution →Who discovered the neutron?Read the answer and worked solution →The neutron was discovered in the year:Read the answer and worked solution →Chadwick bombarded a thin sheet of which element?Read the answer and worked solution →Chadwick bombarded that sheet with:Read the answer and worked solution →Compared with a proton, the mass of a neutron is:Read the answer and worked solution →In Thomson's model, the positive charge of the atom is:Read the answer and worked solution →Thomson's model is popularly nicknamed the:Read the answer and worked solution →Thomson was awarded the Nobel Prize for physics in:Read the answer and worked solution →How many quantum numbers designate each orbital?Read the answer and worked solution →The principal quantum number determines the size and largely the:Read the answer and worked solution →The number of allowed orbitals in a shell is given by:Read the answer and worked solution →How many sub-shells does the second shell contain?Read the answer and worked solution →How many sub-shells does the third shell contain?Read the answer and worked solution →The sub-shell notation for l equal to 0 is the:Read the answer and worked solution →The sub-shell notation for l equal to 2 is the:Read the answer and worked solution →The Pauli exclusion principle was given by a scientist from:Read the answer and worked solution →Pauli stated his exclusion principle in:Read the answer and worked solution →Pauli's principle says no two electrons in an atom can share the same set of:Read the answer and worked solution →Two electrons occupying the same orbital must have:Read the answer and worked solution →Hund's rule is known as the rule of maximum:Read the answer and worked solution →Place the discoveries in timeRead the answer and worked solution →Match each name to the workRead the answer and worked solution →Order the sub-shell lettersRead the answer and worked solution →

Worked practice questions

Mark the sub-atomic board

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Clues and terms
  1. Clue
    Negative particle in cathode rays whose charge to mass ratio Thomson measured
    Item
    Electron
  2. Clue
    Lightest positive ion, first got from hydrogen, and its count sets the atomic number
    Item
    Proton
  3. Clue
    Neutral particle Chadwick knocked out of beryllium with alpha particles
    Item
    Neutron
  4. Clue
    Tiny central region holding the positive charge and nearly all of the mass
    Item
    Nucleus
  5. Clue
    Atoms of one element that differ only in how many neutrons they carry
    Item
    Isotopes
  6. Clue
    Atoms that share a mass number while their atomic numbers differ
    Item
    Isobars
  7. Clue
    Collective name for the protons and neutrons packed into the core
    Item
    Nucleons
  8. Clue
    Sum of the proton count and the neutron count of one atom
    Item
    Mass number
  9. Clue
    Helium nucleus carrying two positive charges and four units of atomic mass
    Item
    Alpha particle
Instructions
Read each clue and tap the one cell it names, aiming for a line of three.
_Source: syllabus Chemistry Part 1, Ch 2 Structure of Atom_

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Match the finder to the finding

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Matching pairs
  1. Left
    Chadwick
    Right
    Found the neutron by hitting beryllium
  2. Left
    J.J. Thomson
    Right
    Measured the electron charge to mass ratio
  3. Left
    R.A. Millikan
    Right
    Fixed the electron charge by oil drops
Instructions
Tap a name, then tap the discovery it belongs to.
_Source: syllabus Chemistry Part 1, Ch 2 Structure of Atom_

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Fill the subshells in order

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Steps
  1. 1s
  2. 2s
  3. 2p
  4. 3s
  5. 3p
  6. 4s
  7. 3d
  8. 4p
Instructions
Tap the subshells in the order electrons occupy them, lowest energy first.
_Source: syllabus Chemistry Part 1, Ch 2 Structure of Atom_

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